• Born: 1069, Percy-en-Auge, Calvados, Normandy, France
• Married:
• Died: Before Dec 1135

  Research Notes:

A charter listing the property of Whitby Monastery names "Alaneo de Perci" as son of "Willielmus de Perci cognomento Algernuus" & his wife. "Willelmus de Perci" donated property to the monks of Whitby "et Serloni priori fratri meo", for the souls of "…Emma de Port uxore mea et Alano de Perci filio meo", by charter dated to [1090/96], witnessed by "Emma de Port uxor mea, Alanus, Walterus et Willielmus filii mei, Ernaldus de Perci…". "Henricus filius Henrici de Percy" confirmed donations of property to Whitby by charter dated 20 Apr 1308, among which two donations by "Alanus de Percy", for the souls of "Willielmi de Percy patris mei et Emmæ de Porte matris meæ", the first witnessed by "Willielmus et Ricardus fratres mei, Pyeot de Percy…" and the second by "Willielmus, Walterus et Ricardus de Percy fratres mei, Robertus de Bruse…Pycot de Percy…". "…Alanus de Perci…" witnessed the charter, dated to the reign of Alexander I King of Scotland, under which "David predicti regis Scotie germanum…Cumbrensis regionis princeps" listed the lands of the church of Glasgow. "…Alano de Perceio…" witnessed the charter dated 1126 under which Henry I King of England confirmed a donation to Worksop priory. "Alanus de Perci et…Willelmus de Perci filius eius" granted property to "Haslat de Lecingfeld" by charter dated to [1130/38]. "Walter de Gaunt" founded Bridlington priory, with the assent of Henry I King of England, by undated charter, witnessed by "Alan de Percy…Walter de Percy…".

The History of the foundation of Whitby Monastery names "Alanum de Percy et Richardum fratrum eius" as the children of "Willielmus de Percy", adding that Alan died without heirs and was buried at Whitby, but the fact that he died childless is contradicted by other charters quoted here. The 1130 Pipe Roll records "Alan de Pci" in Yorkshire, Northumberland. A manuscript genealogy of the Percy family records that "Alanum de Percy", son of "Willielmus de Percy", was buried "apud Radinges". ¹